From the late 1700s to the time around the civil war
Answer:frets divide the neck into fixed segments at intervals related to a musical framework. On instruments such as guitars, each fret represents one semitone in the standard western system, in which one octave is divided into twelve semitones.
Explanation:
<span>String art uses coloured string to make geometric patterns.
</span><span>The first person that used it was by an Englishwoman called Mary Everest Boole (1832 to 1916). She used </span><span>straight lines to make curves
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hope that helps!
